Improvement in lanterns



e. neovmon.

Lantern.

Patented July 1, 1862.

Inventar:

N. PErEnS. Phuwulmgnpher. wuhingwn. D. c.

i UNITED STATES PATENT OFFTCEO G. R. BOYNTON, OF CHICAGO, ILLINOIS,ASSIGNOR TO G. G. POPE AND E. F. SLOCUM, OF SAME PLAGE. y

lNIPROVEM ENT IN LANTERNS.

Specification forming part of Letters Patent No. 35,800, dated July 1,186:2.

To all whom, it may concern.-

Be it known that I, G. R. BoYN'roN, of Ghicago, in the county of Cookand State of 111i nois, have invented a new and useful Improvement inLanterns; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawings, making a Y part of this specification, in which-Figure l is a vertical central section of my invention, taken inthe linem x, Fig. 2; Fig 2, a horizontal section of the same, taken in the liney y, Fig. l.

Similar letters of reference indicate corresponding parts in the twofigures.

The object of this invention is to supply the flame of the lamp, whilein the lantern, with air in such a manner that the flame will not beliable to be affected by the swinging of the lantern, or be extinguishedby a sudden movement of the same-a contingency which frequently occursin using the ordinary 1anterns, especially if coal-oil be employed as aburning material. i

The invention consists in having the oil-,cup encompassed by a jacket,in which a spiral passage is formed, through which the air is admittedto the dame and the desired end attained.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents the base of a lantern, to which the oil-cup or fountain Bof a lamp is secured, as usual. G is the glass shade or protector; D,the guards, and E the top or cap. These parts may be constructed in theusual way, and therefore do not require a minute description.

The oil cup or fountain B is encompassed by a jacket, F, which issufticientlylargc in diameter to admit of a space, a, between it and theoil cup or fountain. This jacket projects over the top of the oil cup orfountain so as to have an annular space or opening, b, around the top ofthe oil cup or fountain at the base of the cap c of the oil cup orfountain as shown clearly in Fig. 1.

To the outer surface of theoil cup or fountain B there is secured awire, d, which is bent in spiral form and extends around the oil cup orfountain, so as to form apartition in the space ct, and `cons equently aspiral passage, the outer edge of the wire d being in contact with theinner side of thejacket F. A wire would probably be the most economicalarticle to use in order to form the partition. A flat plate bentspirally around the oil cup or fountain would answer equally as'well,but it would be more troublesome and expensive to adjust it to the oilcup or fountain.

The base A around the oil cup or fountain isperforated, as shown at e,so as to admit air into the lower part ofthe space c, and the air passesthrough the spiral passage to the ilame, as indicated by the blackarrows in Fig. 1. This cireuitous route of the air between theconvolutions of the wire d prevents the flame being extinguished by asudden movement of the lamp, and causes it to burn comparatively steadywhen the lantern is being carried about,

Athe wire d serving as a barrier between the flame and external air, andcausing any external disturbing cause-such as the swinging of thelantern or a sudden jerking or movement thereof, which either impedes oraccelcrates the draft-to be lost or neutralized inA the long and windingpassage.

' I do not claim the jacket F separately or in itself considered, for`that has been previously used; but

I do claim as new and desire to secure by Letters Patent- The jacketF,in eo mbination with the spiral wire or partition d, placed in thespace a, be-

tween the jacket and the oil cup or fountain B, substantially as and forthe purpose herein set forth.

G. R. BOYNTON. Witnesses:

HENRY C. GLoYEs, M. A. THAYER.

